Ku band satellite dishes usually range anywhere between 18 inches (40cm) to 1.2m (48 inch). Most Free To Air FTA dishes are Ku band. C band satellite dishes can also be used for FTA. C band dishes are are larger in size. Usually 1.8 meters | 6 feet and larger. C band dishes are usually prime focus. With a Ku band LNB specially designed for a C band dish, you can use a C band dish to pick up a Ku band signal.
The difference between the offset satellite dish and prime focal (prime focus) dish is the way the signal reflects from the surface and where it gets concentrated.
Prime Focus Dishes, the signal reflects from the satellite dish and concentrates towards the center, where the LNB is mounted to catch the signal.
Offset Dishes are designed with an offset angle. Usually set at 21-degrees. With this design, the signal reflects from the dish and concentrates towards the bottom of the satellite dish instead of the center of the satellite dish. See the pictures below:
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Prime Focus Dish |
Offset Dish |
In most cases, there are standard size satellite dishes. See the chart below:
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Size in INCH |
Size in Metric |
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45cm Dish |
18 Inch | 18" Dish |
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60cm Dish |
24 Inch | 24" Dish |
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75cm Dish |
30 Inch | 30" Dish |
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80cm Dish |
31.5 Inch* | 31.5"* Dish |
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90cm Dish |
36 Inch | 36" Dish |
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100cm | 1m Dish |
39 Inch | 39" Dish |
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120cm | 1.2m Dish |
47 Inch | 47" Dish |
*Because of marketing, some dish manufacturers and distributors advertise an 80cm dish as a 33" dish rather than a 31" dish
The standard size for offset dish lnb bracket | clamp is 40mm
We carry a few different type of HH motors for offset Ku band satellite dishes. Go here for our satellite motor section.
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Generic C to Ku Band Conversion Bracket LNB Holder Satellite Dish Satellite Tv Dish LNB Bracket CE (Twin Flos)
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New Dual Standar Linear LNB KU-Band LNBF FTA Satellite Dish by Orbital Tracker CE (Orbital Tracker)
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Multi Feed 5 Ku Band LNB Bracket Satellite Dish LNB Holder Lnbf Mount Hold up to 5 Ku Band LNB Satellite Tv Dish LNB Bracket CE (Twin Flos)
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C KU Band Combo LNBF - KU PLL 50KHz Stability - CK1S Speakers (Titanium Satellite)
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Avenger Standard Ku Band Dual LNBF KSC322 10750 0.2dB Noise Speakers (DMS International)
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